Systematics of Moduli Stabilisation in CalabiYau Flux Compactifications
Abstract
We study the large volume limit of the scalar potential in CalabiYau flux compactifications of type IIB string theory. Under general circumstances there exists a limit in which the potential approaches zero from below, with an associated nonsupersymmetric AdS minimum at exponentially large volume. Both this and its de Sitter uplift are tachyonfree, thereby fixing all Kahler and complex structure moduli, which has been difficult to achieve in the KKLT scenario. Also, for the class of vacua described in this paper, the gravitino mass is independent of the flux discretuum, whereas the ratio of the string scale to the 4d Planck scale is hierarchically small but flux dependent. The inclusion of alpha' corrections plays a crucial role in the structure of the potential. We illustrate these ideas through explicit computations for a particular CalabiYau manifold.
 Publication:

Journal of High Energy Physics
 Pub Date:
 March 2005
 DOI:
 10.1088/11266708/2005/03/007
 arXiv:
 arXiv:hepth/0502058
 Bibcode:
 2005JHEP...03..007B
 Keywords:

 Superstrings and Heterotic Strings Superstring Vacua;
 High Energy Physics  Theory
 EPrint:
 23 pages, LaTeX, 1 eps figure